Test your Biology preparation with this MDCAT 2026 Biological Molecules Quiz for MDCAT, featuring 27 important MCQs on carbohydrates, lipids, fatty acids, amino acids, proteins, enzymes, coenzymes, enzyme inhibition, nucleic acids, and biological catalysts. Practice these MDCAT Biology MCQs to strengthen your concepts and prepare effectively for the MDCAT 2026 entrance test. Let us start with the online Biological Molecules Quiz for MDCAT 2026 now:
Results
#1. The type of energy reduced by the enzymes for biological reactions to occur is
#2. Which structure of an enzyme is essential for the special shape of its active site?
#3. An amino acid consists of which of the following elements
#4. An amino acid in which the R-group is hydrogen is
#5. One of the following is not true about biological catalysts
#6. Carbohydrates in cells combine with, and the resulting compounds are called glycoproteins and glycolipids, respectively.
#7. —————– inhibitors have structural similarity with substrater
#8. Which lipid is totally hydrophobic or insoluble?
#9. At a temperature below the freezing point of an enzyme is
#10. What about pyrimidines is not correct?
#11. One which help enzyme and is an organic, non-protein
#12. The highest percentage of RNA in the cell is of
#13. Fatty acids are the organic compounds containing hydrogen, oxygen and one of the following
#14. Enzyme B requires $Zn^{2+}$ in order to catalyze the conversion of substrate x. The zinc is best identified as a(n)
#15. What about enzymes is wrong?
#16. The position of the double bond in oleic acid is
#17. Lipids contain double amount of energy as compared to the same amount of carbohydrates due to the presence of
#18. Sara is a chemistry student who is experimenting with an alcohol and acetic acid in the laboratory. The product formed at the end of the experiment will be
#19. What is common in both competitive and non-competitive inhibition?
#20. Enzyme inhibition caused by a substrate analog is
#21. The most important property of an enzyme is its
#22. Secondary structure of protein is found in
#23. Myosin is a ————— type of protein
#24. Which of the following is a coenzyme?
#25. Which will cause the breakdown of the substrate?
#26. Which of the following is a peptide bond?
#27. Which of the following is an unsaturated fatty acid?
Online Biological Molecules Quiz for MDCAT 2026
- Sara is a chemistry student who is experimenting with an alcohol and acetic acid in the laboratory. The product formed at the end of the experiment will be
- Lipids contain double amount of energy as compared to the same amount of carbohydrates due to the presence of
- Which of the following is an unsaturated fatty acid?
- Which lipid is totally hydrophobic or insoluble?
- —————– inhibitors have structural similarity with substrate
- Enzyme B requires $Zn^{2+}$ in order to catalyze the conversion of substrate x. The zinc is best identified as a(n)
- What about enzymes is wrong?
- Which will cause the breakdown of the substrate?
- One which help enzyme and is organic and non-protein
- Which of the following is a coenzyme?
- At a temperature below the freezing point of an enzyme is
- The most important property of an enzyme is its
- Enzyme inhibition caused by a substrate analog is
- An amino acid consists of which of the following elements
- The position of the double bond in oleic acid is
- The highest percentage of RNA in the cell is of
- What about pyrimidines is not correct?
- One of the following is not true about biological catalysts
- Which structure of an enzyme is essential for the special shape of its active site?
- What is common in both competitive and non-competitive inhibition?
- The type of energy reduced by the enzymes for biological reactions to occur is
- Carbohydrates in cells combine with, and the resulting compounds are called glycoproteins and glycolipids, respectively.
- Which of the following is a peptide bond?
- An amino acid in which the R-group is hydrogen is
- Myosin is a ————— type of protein
- Secondary structure of protein is found in
- Fatty acids are the organic compounds containing hydrogen, oxygen, and one of the following
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